IBM SAN Volume Controller, Hardware Maintenance Manual

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v
Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconducting clip,
approximately 8 cm (3 in.) from the end.
v
Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing.
Remember: Metal objects are good electrical conductors.
v
Wear safety glasses when you are: hammering, drilling, soldering, cutting wire, attaching springs,
using solvents, or working in any other conditions that might be hazardous to your eyes.
v
After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device
that is worn or defective.
v Reinstall all covers correctly after you have finished servicing the unit.
Electrical safety
Observe these rules when working on electrical equipment.
CAUTION:
Electrical current from power, telephone, and communication cables can be hazardous. To avoid
personal injury or equipment damage, disconnect the attached power cords, telecommunication
systems, networks, and modems before you open the machine covers, unless instructed otherwise in
the installation and configuration procedures. (26)
Important: Use only approved tools and test equipment. Some hand tools have handles covered with a
soft material that does not insulate you when working with live electrical currents. Many customers have,
near their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic
discharges. Do not use this type of mat to protect yourself from electrical shock.
v
Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet. If an
electrical accident occurs, you can then operate the switch or unplug the power cord quickly.
v
Do not work alone under hazardous conditions or near equipment that has hazardous voltages.
v
Disconnect all power before the following activities:
– Performing a mechanical inspection
– Working near power supplies
– Removing or installing main units
v
Before you start to work on the unit, unplug the power cord. If you cannot unplug it, ask the customer
to power off the wall box that supplies power to the device and to lock the wall box in the off position.
v
If you need to work on a device that has exposed electrical circuits, observe the following precautions:
– Ensure that another person, familiar with the power-off controls, is near you.
Remember: Another person must be there to switch off the power, if necessary.
– Use only one hand when working with electrical equipment that has the power turned on; keep the
other hand in your pocket or behind your back.
Remember: There must be a complete circuit to cause electrical shock. By observing the previous
rule, you might prevent a current from passing through your body.
– When using testers, set the controls correctly and use the approved probe leads and accessories for
that tester.
– Stand on suitable rubber mats (obtained locally, if necessary) to insulate you from grounds such as
metal floor strips and machine frames.
Observe the special safety precautions when you work with very high voltages; these instructions are
in the safety sections of maintenance information. Use extreme care when measuring high voltages.
v
Regularly inspect and maintain your electrical hand tools for safe operational condition.
v
Do not use worn or broken tools and testers.
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IBM SAN Volume Controller Hardware Maintenance Guide